I am not opposed to roll crimping, but if you are using a MEC, either single stage or progressive and don't want to alter the press or set up a separate station to roll crimp, you can simply insert an overshot card before crimping. I use a 20 ga over shot card in 12 ga shells. This was detailed in Shooting Sportsmen many years ago.


This ain't a dress rehearsal , Don't Let the Old Man IN